Pts were treated with PD-1 inhibitor (q3w) and denosumab (120mg, q4w) for subsequent maintenance therapy regardless of bone metastases....Subgroup analysis suggested a greater survival benefit in patients with KRAS codon 12 mutations than in patients with KRAS non-codon 12 mutations (mPFS1, 365 vs 267 days; p=0.002; mPFS2, 224 vs 120 days; p=0.005).